Methods and apparatus for buffering anesthetics

Details Methods and apparatus for buffering anesthetics Methods and apparatus for buffering anesthetics

A - Human Necessities

61

J

A61J 1/20 (2006.01)

Patent

CA 2725139

A device for delivering buffer solution into a buffer cartridge comprises a needle assembly and a pusher. The septa of a buffer cartridge and an anesthetic cartridge are advanced onto a transfer needle, and the pusher advances a plunger into the buffer cartridge to deliver buffer through the transfer needle into the anesthetic cartridge. A separate exhaust needle allows excess anesthetic from the anesthetic cartridge to be exhausted. A compression member is usually provided to maintain a force against the plunger on the buffer cartridge to pressurize and stabilize the contents during sterilization and/or storage.

L'invention porte sur un dispositif destiné à administrer une solution tampon à l'intérieur d'une cartouche tampon comprenant un ensemble aiguille et un poussoir. Les cloisons d'une cartouche tampon et d'une cartouche d'anesthésique sont amenées sur une aiguille de transfert, et le poussoir fait progresser un piston à l'intérieur de la cartouche tampon pour délivrer du tampon au moyen de l'aiguille de transfert à l'intérieur de la cartouche d'anesthésique. Une aiguille d'évacuation séparée permet à l'anesthésique en excès provenant de la cartouche d'anesthésique d'être évacué. Un élément de compression est habituellement fourni pour conserver une force contre le piston sur la cartouche de tampon afin de pressuriser et de stabiliser les contenus durant la stérilisation et/ou le stockage.

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